PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN 4-bet 13.8bb

CO vs BTN 4-bet 13.8bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · CO limps, BTN isolates to 3bb, CO 3-bets to 6bb, BTN 4-bets to 13.8bb · Cutoff to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 22.26bbYour cards?
6bb
13.8bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

80 of 1,326 combos get here
Fold 40.9%Call 27.4%All-in 39.84bb 31.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the cutoff (CO) when CO limps, BTN isolates to 3bb, CO 3-bets to 6bb, BTN 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

CO limps, BTN isolates to 3bb, CO 3-bets to 6bb, BTN 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the cutoff (CO) folds 40.9%, calls 27.4% and goes all-in 39.84bb 31.7%. Always all-in 39.84bb: AA. Mixed: A8s.

Always fold
A6s
Always call
No hand plays this every time
Always all-in 39.84bb
AA
Mixed
A8s
Settings: 6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.